N-Phenylhydrazone

Benzaldehyde-2-sulfonic acid sodium salt [1008-72-6] M 208.2, m dec on heating. Forms prisms or plates by extracting with boiling EtOH, filtering, evaporate to dryness and recrystallise the Na salt from a small volume of H2O. The N-phenylhydrazone sodium salt recrysts from H2O, m 174.5°. [Gnehm and Schiile Justus Liebigs Ann Chem 299 363 1898.]... 

Scheme 54 Anodic cycloaddition between pyridine and N-phenylhydrazones.

The photochemical conversion of the st/n-phenylhydrazone of pyri-dine-2-carboxaldehyde to the antz-isomer has been shown to be a first order and 1-quantum process.266,256... 

Benzaldehyde phenylhydrazone added to a stirred suspension of NaNHg in liq. NHg, after 10-15 min. benzyl chloride in anhydrous ether added, stirred, and after 1.5 hrs. a slight excess of 1 molar equivalent of NH4GI added benzaldehyde N-benzyl-N-phenylhydrazone. Y 92%. F. e., also with KNHg, s. W. G. Kenyon and G. R. Hauser, J. Org. Ghem. 30, 292 (1965). 

Crystal data for the 1 1 Acetonate and for the Solvent-free forms of Indanetrione 2-(N-/7-/-butylbenzoyl-N-phenylhydrazone) (II)... 

C3oH2202f meso-2,2 -Dioxo-l,1 -diphenyl-1,r-biindane, 44B, 153 C37H24N4O5, Indan-1,2,3-trione 2-(N-benzoyl-N-phenylhydrazone) indan-1,2,3-trione 2-(N-phenylhydrazone), 44B, 153 C4 3H30O2 f 1-(Diphenylvinylidene)-3-phenyl-2-indenyl diphenylacetate, 45B, 148... 

A soln. of benzophenone N-methyl-N-phenylhydrazone in methylene chloride added dropwise at 0-5° with ice-water cooling to a stirred soln. of lead tetraacetate in the same solvent, and stirring continued 20-30 min. at room temp. 

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